Spring-structure



Aug. 4, 1936. s. KARPEN SPRING STRUCTURE Filed Aug. 29, 1934 PatentedAug. 4, 1936 SPRING-STRUCTURE Solomon Kai-pen, Chicago, Ill., assignmtoS. Kai-pend; Bros Chicago, 11]., a corporation of West VirginiaApplication August 29, 1934, Serial No. 741,965 4 Claims." (01. 5-269)This invention relates particularly to springstructures adapted for usefor various purposes, as for use in mattresses, bed-springs or forupholstery purposes.

An object 01' the invention is to provide improved spring-structurewhich will permit great flexibility while at the same time substantialLvavoiding noise, caused by the clashing oi the endrings against eachother. A further object is to provide a spring-structure which may berolled without producing distortion or bending of the end-rings andtheir connections.

The invention is illustrated in a preferred embodiment in theaccompanying drawing, in which-- Figure 1 is a plan view ofspring-structure embodying my invention; Fig. 2, a plan view of amodified form of spring-structure; Fig. 3, a sectional detail view, thesection being taken as indicated at line 3 of Fig. i; Fig. 4, a plandetail view of a modified form of spring structure embodying myinvention; Fig. 5, a sectional view, the section being taken asindicated at line 5 oi Fig. 4; and Fig. 6, an enlarged view of thestructure shown in Fig. 4, the view being taken as indicated at line 6of Fig. 4.

Referring to Fig. 1 and Fig. 3, the spring-structure shown comprisescoil springs A, A, A, and helical connectors B, B connecting thesprings.

The springs A may, if desired, be of the hourglass type of upholsterysprings, in which event helical connectors will ordinarily be employedto connect the end-rings at both sides of the spring structure.

It has been common practice to provide such end-rings with depressionswhich-extend below the end-rings in a vertical plane and such depressedportions have been connected by helical connectors. Such structure hasthe disadvantage of producing shoulders lying against the endrings whichtend to engage the end-rings when the mattress is rolled or flexed. Thisproduces a clashing oi the shoulders against the end-rings, resulting innoise and in distortion of the depressions and the end-rings.

The characterizing feature of the present invention is that thedepressions, instead of extending in a vertical plane below theend-rings, are slanted laterally at suitable angles so that theend-rings are spaced sufficiently apart to permit flexing oi the coilsprings without causing the shoulders of the depressions to engage theendrinss.

In the construction shown in Figs. 1 and 3, the end-rings iii of coilsprings A are provided with depressions II which extend laterally anddownwardly. The bottom rounds. I! of the depressions, as shown moreclearly in Fig. 3, are brought substantially in contact. In theillustration shown in Fig. 3, the angle of movement between 5 the wallsof the depression above the rounds I2 is almost thus permitting widerelative movement of the adjacent coil springs without any contact otherthan that between the adjacent rounds i2, I2. 11' desired, the angle orinclina- 10 the knots l3 which are employed in the construction shown inFig. 1. It will be noted that each 01' the springs A is provided with atleast one 25 depression I4 which terminates in a free end il. Each ofthe free end depressions is engaged by a helical connector B so as tosecure it to the adjacent depression of the adjacent coil spring A. Thefree end depressions H, as well as the de- 30 pressions it, which do notterminate in a free end, are slanted outwardly and downwardly in thesame manner as the depressions ii of the coil spring A.

It will be noted that the free end depressions 35 H are each providedwith a shoulder ii, a shank i8 and a shoulder l9 adjacent the end 85.The shoulder i1 is firmly engaged by the helical connector B and issufliciently strong to maintain the depression firmly in contact withthe adjacent 40 depression when engaged by the helical connector. Ifdesired, therefore, the shoulder i9 may he cut away, leaving only theshoulder i1 and the shank i8. With the structure shown in Fig.

2, increased flexibility over that shown in Fig. 1 45 is produced by thefree end depressions M; at the same time, the knotting operation iseliminated.

In the spring construction shown in Figs. 4, 5, and 6, the adjacentend-rings 20 of the spring 50 structure, such as is illustrated in Fig.2, are provided with depressions 2| which extend below the end-rings ina substantially vertical plane, as illustrated more clearly in Fig. 5,the depressions being connected by a helical connector 13'. One 01' 55the depressions is, however, provided with a free end 22, the shoulder Nof the last-mentioned depression being engaged by coils of the connectorB and serving to lock the depression firmly against the adjacentdepression. It will be noted that the tree end 22 does not extend abovethe connector 3*. However, if desired, the end may be so extended inaccordance with the showing in Fig. 2.

In each construction described, it will be observed that increasedflexibility is afiorded. while at the same time the helical connector issupported below the plane of the end-ring. The free end depression shownin Figs. 4, 5, and 6 brings about increased flexibility by eliminatingone of the shoulders, while in the construction shown in Figs. 1 and 2,increased flexibility is aflorded by angularly related depressions. Thestructures shown in Figs. 2, 4, 5, and 6 have the iurther advantage overthe structure shown in Fig. 1, in that the knotted ends II areeliminated.

The foregoing detailed description isgiven for clearness ofunderstanding only, and no unnecessary limitations should be understoodtherefrom, but the appended claims should be construed as broadly aspermissible. in view oi the prior art.

What I claim as new, and desire to secure by Letters Patent, is:

1. A spring-structure comprising parallel rows oi upholstery springshaving end-rings disposed in adjacent relation at lines between saidrows,

each of said end-rings where adjacent to one on the opposite side 01 therow having an outwardly and downwardly extending depression, and hellcalconnections arranged between said rows and having threaded engagementwith said depressions and holding the bottom portions oi. such adjacentdepressions substantially in contact.

2. A spring-structure comprising parallel rows or upholstery springshaving end-rings disposed in horizontal alinement but slightly spacedapart. each of said end-rings where adjacent to one on the opposite sideof the row having a downwardly and laterally extending depression, andhelical connections arranged between said rows below the plane of theend-rings and having threaded engagement with said depressions andholding the bottom portions 0! said adjacent depressions substantiallyin contact.

3. A spring-structure comprising parallel rows of upholstery springshaving end-rings juxtaposed but slightly spaced apart, each of saidend-rings where adjacent to one on the opposite side or the row having adepression slanting downwardly and outwardly, some or said depressionsterminating in free ends, and helical connections arranged between saidrows and having threaded engagement with said depressions and holdingthe hottom portions of such adjacent depressions sub- 25 stantially incontact.

4. A spring structure comprising adjacent rows of upholstery springshaving end-rings juxtaposed but slightly spaced apart, each of saidend-rings where adjacent to one on the opposite side of the row having alaterally extending depression below the plane of the end-rings, andhelical connections arranged between said rows and having threadedengagement with said depressions and holding the bottom portions of suchadjacent depressions substantially in contact.

- SOLOMON KARI-EN.

